The LPA4722A stereo headphone amplifiers are designed for portable equipment
where board space is at a premium.
The LPA4722A deliver up to 215mW per channel into a 16Ω load
or 200mW into a 32Ω load and have low 0.005% THD+N.
An 80dB at 217Hz power-supply rejection ratio (PSRR)
allows these devices to operate from noisy digital supplies
without an additional linear regulator.
Comprehensive anticlick-and-pop circuitry
suppresses audible clicks and pops on startup and shutdown.
A low-power shutdown mode reduces the supply current to 0.1µA.
The LPA4722A operates from a single 2.5V to 5.5V supply,
consumes only 5mA supply current,
and is specified over the extended -40 ℃ to +85 ℃
temperature range.
The devices are available in tiny 16-pin TQFN (3mm×3mm×0.8mm) packages.
